At Chicago's revered Field Museum, visitors are invited to learn about and literally explore DNA.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

A century-old network of freight tunnels underneath the city's historic business district.

A lush green oasis in the middle of Chicago.

A monument to the art of slicing people open.

A unique hotel for the artistic soul.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

This small Slovenian town has become a magnet for microbreweries.

A cemetery for Slovenian notables also serves as a popular recreation space.

A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.

The walls of this medieval church are covered with perfectly preserved frescos, including a pristine example of the Dance of Death.

The "dragon babies" of southeastern Europe.

A whimsical bridge adorned with decorative dragons.

A miniature train-ride through Slovenia's largest cave system.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

This one-time health resort was used by aristocrats around the world.

This massive subterranean fissure is known as the "underground Grand Canyon."

An officers prison camp believed to be impregnable by the Germans saw over 30 successful escapes.

The largest treasure hoard in Europe is contained in a castle that was bombed out during World War II.

The home of the morbid art of corpse plastination is open for visitors to view the fascinating, but stomach-churning process.

This mysterious and once-grand memorial still embodies a remarkable architectural vision.

Museum dedicated to "the man who moved the Earth."

What was once an underground Nazi city is now Europe's largest bat reserve.

Zurich's evolution museum hosts a unique collection of skeletons among its natural history treasures.